Polishing device



May 17, 1955 c, GAYDOS 2,708,281

POLISHING DEVICE Filed May 7, 1953 United States Patent ()f ice2,708,281 Patented May 17, 1955 POLISHING DEVICE Donald C. Gaydos, RockIsland, Ill.

Application May 7, 1953, Serial No. 353,565

4 Claims. (Cl. 15-102) This invention relates to a polishing device andmore particularly to such device as provided in the form of anattachment connectible to and powered by a small portable electric tool,such as the conventional electric drill. Still more particularly, theinvention aims to provide a simple and economical tool especially usefulin the care and maintenance of Venetian blinds, primarily by enablingeasy and rapid waxing and polishing of the individual slats of suchblinds.

The invention has for an important object the provision of a simplemounting frame in which are removably journaled a pair of rolls, whichrolls may be replaced by another pair of similar rolls so that one pairmay be used for the application of Wax, for example, and the other pairfor bufling or polishing. It is a further object of the invention toprovide the frame with mounting means for effecting the attachmentthereof to a suitable support so that the user has both hands free tohandle the blind slats. Still further, one of the rolls has an inputshaft receivable in the chuck of a portable electrically powered tool. Aconventional electric drill makes a suitable source of power, especiallywhen mounted in a typical bench stand, because the frame-mounting meansmay then be aifixed to the bench stand and the entire assembly becomessubstantially a convenient and efficient unit.

The foregoing and other imporant objects and desirable features inherentin and encompassed by the invention will become apparent as thedisclosure of a preferred embodiment of the invention progresses in thefollowing detailed description and accompanying drawings, wherein:

Figure 1 is a perspective view of the device as used with an electricdrill and bench stand.

Figure 2 is a perspective view, on a slightly enlarged scale, of theattachment per se.

Figure 3 is a perspective view, on the scale of Figure 2, of thesupporting frame.

Figure 4 is a perspective view, on the scale of Figures 2 and 3, of theremoved rolls.

Figure 5 is a fragmentary sectional view illustrating the removal andreplacement of the rolls.

Figure 6 is a section on the line 6-6 of Figure 2.

Figure 7 is a fragmentary section showing the attaching means.

In Figure 1, the numeral 10 represents the top of a table, work bench,etc. on which an electrically powered tool, such as a conventionalelectric drill 12, is mounted by means of a conventional bench stand 14.Screws 16 are shown for afiixing the stand 14 to the table 10. The drill12 has a chuck 18 of usual design.

The polishing device or attachment is designated in its entirety by thenumeral 20, and comprises a mounting or supporting frame 22 having firstand second upright legs or end members 24 and 26. Each member 24, 26 isof rectangular shape and the members are rigidly interconnected inspaced relation by upper and lower rigid connecting elements or rods 28and 30. The rod 28 extends between and is preferably welded at itsopposite ends at 32 and 34 respectively to alined upper corners of theend members 24-and 26. The lower rod extends between and is welded atits opposite ends at 36 and 38 respectively to alined lower cornersdiagonally opposite the alined upper corners. This design produces anopen construction enabling easy mounting and removal of upper and lowerpolishing, bufiing or waxing rolls 40 and 42, preferably of lambs wool.

The end member 24 has a pair of bearing means afforded by upper andlower shaft-receiving openings 44 and 46. A pair of bearing means isestablished in the other or second end member 26 by upper and lowershaftreceiving slots 48 and 50. The inner portions of these slots, as at52 and 54, are respectively coaxial with the openings 44 and 46, and theopenings and slot portions respectively receive first and second coaxialshaft portions 56 and 58 on the upper roll 46 and first and second shaftportions 66 and 62 on the lower roll 42. A sheave 64 is fixed to theupper second shaft portion 58 and is axially spaced from the proximateend of the roll 49 (Figure 5). A somewhat larger sheave 66 is fixed tothe lower roll second shaft portion 62 and is similarly axially spacedso that the sheaves are coplanar to have trained thereabout an endlessdriving belt 68. The length of each roll 49, 42 is such that it liesbetween the end members 24 and 26, and the coaxial spacing of eachsheave relative to its roll end places it outside the second end member26. The belt 68 is accordingly outside the second end member, leavingthe interior of the structure free to pass Venetian blind slats betweenthe rolls, one such blind slat being shown at 70 in Figures 1 and 6.

The upper and lower openings 44 and 46, as well as the inner portions 52and 54 of the upper and lower slots 48 and 56, are laterally offset, asillustrated, and, since the rolls 4G and 42 are of the same diameter,the surface of the lower roll will be offset relative to the upper rollto provide what may be termed a shoulder (Figure 6) for facilitating theentry of the slat 70 between the rolls.

As best shown in Figure 3, the slots 48 and 59 open in laterallyopposite directions. The upper roll is installed from one side, as shownin Figure 5, and installation of the lower roll will be from theopposite side, as also appears in Figure 5. When the rolls are parallel,the sheaves 64 and 66 will be coplanar and the belt 68 is trainedthereabout. The belt is of such initial size, material (viz., leather,rubber, etc.) and tension as to fit the sheaves snugly, thus holding therolls against lateral displacement and accordingly confining the shaftportions 58 and 62 against escape from the slots 48 and 50. When it isdesired to remove the rolls, the belt or band 66 may be readily removedand the rolls slipped out as suggested in Figure 5. The necessity ordesirability for removal of the rolls may arise because of the use ofone pair of rolls for wax or polish application and the substitution ofsimilar rolls for bufiing and polishing. Thus an entire set or series ofblind slats may be waxed, for example, and then the rolls can be changedand the set or series can be buffed or polished.

The upper second shaft portion has a coaxial terminal end part 72 thatprojects beyond the sheave 64 to provide an input element receivable anddriven by the drill chuck 13.

The device 20 has means for fixing it in position relative to its sourceof input powerhere the drill 12. For this purpose, the end member 26 hasrigidly afiixed thereto, as by welding at 74, one end of a support armor mounting element 76, the other end of which is bent down at 78 andapertured at 80 and 82. Securing means, such as a bolt 84 and wing nut86, may be passed through the aperture 82 and through an alined aperture88 in the upright front leg of the bench stand 14 (Figure 7). Additionalmounting or securing means may be used, employing the aperture 80. Forexample, as shown, a pin 90 may fit the aperture 80 and an alined secondaperture 92 in the bench Stand 14.

The characteristics. of use, operation and maintenance of the attachmentwill appear, Without further elaboration, from the foregoing descriptionof its structural and design features. Other features and advantages.will readily occur to those skilled in the art, as will variousmodifications and alterations of the preferred embodiment of theinvention disclosed, all of which may be achieved without departing fromthe spirit'and scope of the invention.

What is claimed is:

l; A polishing device of the character described, comprising: a framehaving first and second spaced apart upright end members, said first endmember having vertically spaced upper and lower shaft-receiving openingsand said second end member having upper and lower shaft-receivingslots,said slots opening laterally outwardly respectively in oppositedirections and having inner portions respectively coaxial with theaforesaid upper and lower shaft-receiving openings; upper and lowerpolishing rolls, each of a length receivable between the first andsecond end members of the frame and each having first and second axiallyprojecting shaft portions respectively receivable by and journaled inthe upper and lower shaft-receiving openings and in the inner portionsof the upper and lower shaft-receiving slots; upper and lower sheavesrespectively coaxial with and fixed to the upper and lower second shaftportions, each sheave being axially spaced from the proximate end of itsassociated roll so as to lie axially outwardly of the second end mem- [lber of the frame; and an endless driving belt removably trained aboutthe sheaves said belt being of such size as to fit the sheavessutficiently snugly to retain the rolls against lateral displacement soas to retain the second shaft portions against escape from theshaft-receiving slots.

2. The invention defined in claim 1, in which: one of V laterally offsetto oflset the axes of rotation-of the rolls,

said rolls being of the same diameter and said offset enabling thesurface of the lower roll to project laterally beyond that of the upperroll for facilitating feeding of articles to the rolls.

References Cited in the file of this patent UNITED STATES PATENTS1,520,596 Prather Dec. 23., 1924- 1,386,950 French NOV. 8 1 9322,018,648 Dinley Oct. 22, 1935 2,472,155 Gaino June 7, 1949 'FQREIGNPATENTS 671,100 France u Aug. 31, 1929

